People worship technology on Planet Daishon.

With inventions that prolong life and eradicate disease, it's little wonder. Death seems obsolete until an earthquake kills thousands, including Mallory's parents. They should have lived for a thousand years, not just fifty. Mallory scrambles for answers. Such a disaster shouldn't be possible.

Quakes have never happened on this world before.

Suspecting the top research center had triggered it, her best friend's father investigates. When he turns up missing, Mallory goes on site after him as a geology intern. She can't bear to lose anyone else.

An old mine sits at the epicenter of the recent quake, and an unbreakable alien barrier seals it off. But a door hidden in its surface opens for Mallory when she translates its engravings. Once inside, she evades underground predators while cut off from the tech that's always protected her.

Some graves run much deeper than six feet, and this place could be one of them.

Within this self-contained world lie the remnants of a universal war, revealing that Daishoni folklore is more than superstition. To survive, Mallory must trust in something more than science and logic. She must follow the voice of one she can't see down to the very bottom. Something deadlier than a quake is trapped there, and it is trying to escape.